1212224140 has 12 divisors (see below), whose sum is σ = 2545670736. Its totient is φ = 484889648.

The previous prime is 1212224129. The next prime is 1212224179. The reversal of 1212224140 is 414222121.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30305584 + ... + 30305623.

It is an arithmetic number, because the mean of its divisors is an integer number (212139228).

Almost surely, 2^1212224140 is an apocalyptic number.

1212224140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212224140 is an abundant number, since it is smaller than the sum of its proper divisors (1333446596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212224140 is a wasteful number, since it uses less digits than its factorization.

1212224140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60611216 (or 60611214 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1212224140 is about 34817.0093488800. The cubic root of 1212224140 is about 1066.2547430712.

Adding to 1212224140 its reverse (414222121), we get a palindrome (1626446261).

The spelling of 1212224140 in words is "one billion, two hundred twelve million, two hundred twenty-four thousand, one hundred forty".